Improvement in organ-couplers



C. SCHAL LBEBG.

Organ-Couplers.

No,152,694, v Patentedjunesmm'm.

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UNITED STATES PATENT OFFICE.

CHARLES SCHALLBFRG, OF SYRACUSE, NEW YORK, ASSIGNOR TO HORATIO N.GOODMAN, OF SAME PLACE.

IMPROVEMENT IN ORGAN-COUPLERS.

Specification forming part of Letters Patent No. 152,694, dated June 80,1874; application filed March 11, 1874.

To all whom it may concern:

Be it known that I, CHARLES SorIALL- BERG, of Syracuse, in the county ofOnondaga and State of New York, have invented certain new and usefulImprovements in Actions for Organs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it pertains to make anduse it, reference being had to the accompanyin g drawings which formpart of this specification.

In the manufacture of instruments like melodeons or organs, which haveone or more banks or manuals of keys, couplers are frequently employedto connect either the manuals with each other, or keys which are anoctave apart in the same key-board. In such cases it has been founddesirable to use a device for adjusting the coupler to the key, in orderto produce a closeness and elasticity of touch under all of the varyingconditions and relations incident to the shrinking, swelling, andwarping of the wood, growing out of the difference in the temperatureand the atmospheric changes to which an instrument is subjected.

The object of this invention is to make a cheap, durable, and effectiveadjustable coupler, which can be accurately regulated by the use of anordinary screwdriver; and to this end the invention consists incombining, with the keys and arms or levers of the coupler,adjustingserews, as will be hereinafter explained.

Figure 1 represents a vertical transverse section of so much of anorgan-action as is necessary to illustrate my invention, and Fig. 2represents another method of carrying it out.

A is the key of the lower bank, and B a key of the upper bank or manual,both being mounted, by preference, on balance-rails O, and provided withsteady-pins c and recoilsprings c. l) is a lever, which communicates themotion of the upper key to the valve in the wind-chest or reed-board andsuitable connections should be made between key A and anotherreed-valve. E is a rocking shaft mounted at each end in suitablebearings, so as to rotate therein freely. e is a pin or stem arranged toslide in a mortise cut for its reception through rock-shaft E. This pinmay have a head at its upper end, made too large to pass through themortise in the shaft; or it may have a recess cut in one side, and a pininserted in one wall of the mortise to prevent it (the pin) from beingaccidentally removed from the rock-shaft.

It will, of course, be understood that the rock-shaft is of suiiicientlength to extend between all of the keys in the two banks which it isdesired to couple, and that there is a pin, 0, for each pair of suchkeys.

B (see Fig. 2) is an adjusting-screw extending through the upper key,and provided at its lower end with a pad or plate, 0, adapted to restupon and support the upward thrust of the pin 0.

In Fig. 1, screw B, instead of having a pad, bears upon a tongue formedon the key B, by sawing a kerf in the end, or made in a separate piece,and hinged to the lower side of the key, or made of an elastic strip andattached to the key by screws or their equivalents. dis a screw, which Igenerally call a dip-screw, from the fact that by turning it up or downI can regulate the amount of play or dip of key B.

The rock-shaft is operated by means of a common pull-stop, and it willbe readily seen that when it is in the position indicated by the fulllines in the drawing, the upper key B will be actuated from the lowerkey A; but if the rock-shaft and pin 0 be moved by the pull-stop intothe position represented by the dotted lines in Fig. 1, the connectionbetween the two keys will be broken, and the lower one may be operatedindependently of the upper one.

Of course, this coupler may be arranged to actuate the levers of anordinary octave coupler in substantially the same manner that it doesthe upper key I). I

Having thus described my invention, What1'11testimonythatIelaimthefbregoingIhave I claim is hereunto set my handthis 19th day of J amt 1. The combination of the rock-shaft E win ary,18H. 0, and set-serewB with the keys A and B, GPLXRLES SCH kLL-BERGsubstantially as set forth.

2. The combination 0 f theleverD, set-screws Witnesses: B 1?, keys A I),rock-shaft E, and pin 0, sub- C. \V. SMITH, stantially as described.JAMES 0. MIX.

